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  <a name="DWS_00092_a1"></a><a name="DWS_00092_a1"></a>
  <h1 class="topictitle1">Precautions for Deploying ProtectAgent on Production Hosts (Applicable to 1.6.0 and Later Versions)</h1>
  <div>
   <p>You need to add environment variables when deploying ProtectAgent on production hosts. Otherwise, Roach commands will fail to be executed.</p>
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    <h4 class="sectiontitle">Procedure</h4>
    <ol>
     <li><span>Use PuTTY to log in to all CNs in the GaussDB (DWS) cluster where ProtectAgent has been deployed.</span></li>
     <li><span>Run the following command to open the <strong>env</strong> file (user <strong>omm</strong> is used as an example):</span><p></p><pre class="screen">vi /home/<em>omm</em>/profile/env</pre>
      <div class="p">
       Ensure that the following content has been added to the <strong>env</strong> file. The ProtectAgent installation directory <strong>/opt</strong> is used as an example.
       <pre class="screen">export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/<em>opt</em>/DataBackup/ProtectClient/interfaces/xbsa/lib</pre>
      </div> <p></p></li>
     <li><span>Run the following command to open the <strong>.bashrc</strong> file (user <strong>omm</strong> is used as an example):</span><p></p><pre class="screen">vi /home/<em>omm</em>/.bashrc</pre>
      <div class="p">
       Ensure that the following content has been added to the <strong>.bashrc</strong> file. The ProtectAgent installation directory <strong>/opt</strong> is used as an example.
       <pre class="screen">export DATA_BACKUP_AGENT_HOME=/<em>opt</em></pre>
      </div> <p></p></li>
    </ol>
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